A251442 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the minimum of its diagonal elements greater than the absolute difference of its antidiagonal elements

192, 2312, 2312, 27486, 86930, 27486, 327033, 3204536, 3204536, 327033, 3888017, 119053429, 360591824, 119053429, 3888017, 46227589, 4414109389, 41060404870, 41060404870, 4414109389, 46227589, 549607078, 163787201307, 4653177899915

Offset

1,1

Comments

Table starts

.....192.......2312.........27486...........327033.............3888017

....2312......86930.......3204536........119053429..........4414109389

...27486....3204536.....360591824......41060404870.......4653177899915

..327033..119053429...41060404870...14434973166138....5038742133151250

.3888017.4414109389.4653177899915.5038742133151250.5400094007696295470

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Formula

Empirical for column k:

k=1: [linear recurrence of order 10]

k=2: [order 41]

Example

Some solutions for n=2 k=4
..0..0..0..1..3....0..0..0..0..3....0..0..0..2..1....0..0..0..1..2
..0..2..0..1..3....0..0..0..3..3....0..2..2..0..1....0..0..0..1..3
..0..0..0..2..1....0..2..3..0..1....0..0..1..1..0....0..0..1..1..2

Crossrefs

Sequence in context: A051526 A188786 A362510 * A251435 A183710 A183702

Adjacent sequences: A251439 A251440 A251441 * A251443 A251444 A251445

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 02 2014

Status

approved